Columbia Tragedy February 1, 2003 Approximate speed of the shuttle at the beginning ofreentry Mach 25 Approximate speed of the shuttle when it began to break up Mach 18 Approximate speed of a 0.30 cal bullet from a big game rie 3000 ft/s Typical reentry speed for an ICBM 1800 mi/hr Mach 1 = Speed of sound (at 20C) 343 m/s \"Thus the term \"Mach\" means how many times the speed of sound; Mach 2 is twice the speed of sound, etc Speed of Light = Warp 1 3.0 x 103 m/s Use the information above to answer these questions. You MUST SHOW YOUR WORK to get full credit for your answers. 1. When the shuttle began to break up it was traveling at Mach ,which is times the speed of sound. 2. The shuttle was traveling at approximately mi/hr when it broke up. 3. A 0.30 cal bullet travels at mi/hr. 4. The space shuttle was traveling times faster than a 0.30 cal bullet when it broke up. 5. The space shuttle was traveling time faster than a 0.30 cal bullet when it began its reentry (Mach 25). 6. If our fastest spacecraft travels at 0.00001 times the speed of light, they are traveling at approximately mi/h r. 7. The spacecraft described in question #6 is traveling at approximately Mach 8. Light is times faster than sound. 9. When the space shuttle broke up, it was traveling times faster than a typical ICBM on reentry into our atmosphere. 10. Could you hear a bullet before it hit you? Why or why not? 11. Could you hear the space shuttle before it flew by? Why or why not